Do yourself a favor if you plan on subtheming and install Firefox and Firebug. Google it and read about it and you’ll see why this is such a critical tool for subthemers…
Do yourself another favor and also try Chrome’s Developer tools. you can right click on an element and see all the fun stuff behind it. including the css inheritance. i like chrome more than ff. it’s just faster. even though it is a little big brother-ish. which it is…. but i still like it.
and, i wish that ie would just go away. what a piece of monkey junk….